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INTRODUCTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

BINARY FISSION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PHYSIOLOGICAL EFFECT OF GROWTH ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

NORMAL GROWTH ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

ENUMERATION OF BACTERIA ,[object Object],[object Object],[object Object],[object Object],[object Object]

VIABLE COUNT PROCEDURES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

VIABLE COUNT BY SAMPLE DILUTION ,[object Object]

SURFACE DROP (MILES + MISRA METHOD) ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PHYSICAL & CHEMICAL FACTORS AFFECTING GROWTH

TEMPERATURE ADAPTATIONS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TEMPERATURE RANGES FOR MICROBIAL GROWTH

GAS REQUIREMENTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bacterial Enzymes that Protect the Cell Against Toxic Forms of Oxygen

OXYGEN & BACTERIAL GROWTH 1 2 3 4 5 1: Obligate Aerobe 2: Facultative Anaerobe 3: Aero-tolerant Anaerobe 4: Strict Anaerobe 5: Microaerophilic

EFFECTS OF pH ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WATER ACTIVITY (Aw) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Effect of Aw on growth of Staphylococcus aureus in medium containing hydrolysate

The Interrelationships of Aw of various foods & susceptibility to microbial spoilage

OSMOTIC PRESSURE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

NUTRIENT CONCENTRATION ,[object Object],[object Object],[object Object],[object Object],[object Object]

a) Effect of changes in limiting concentration on total microbial yield b) Effect on growth rate Total growth (cells or mg/ml) Nutrient concentration Nutrient concentration Growth rate (hr -1 )

MICROBIAL ASSOCIATIONS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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